A network administrator needs to configure a router with a distance-vector protocol that allows classless routing. Which of the following satisfies those requirements?

Question: A network administrator needs to configure a router with a distance-vector protocol that allows classless routing. Which of the following satisfies those requirements?
[A].

IGRP

[B].

OSPF

[C].

RIPv1

[D].

EIGRP

Answer: Option D

Explanation:

In this question, we’re calling EIGRP just plain old distance vector. EIGRP is an “advanced” distance-vector routing protocol, sometimes called a hybrid routing protocol because it uses the characteristics of both distance-vector and link-state routing protocols.